aka: Interstellar Interference (Would The Last One To Leave Please Turn Off The Gravity).
A simulation of several point masses, which exert gravitational forces upon each other. Visualized with spheres representing the masses, with swooshing vapour trails generated by OpenGL texture feedback. Sonified by each mass making a noise, the sound from each of each pair of masses is ring modulated, with the contribution to the overall audio determined by the distance between those two masses.
Realized with Pd and Gem and some custom code for gravity simulation.